.layout3 {
  display: flex;
  text-align: center;
  height: 100vh;
}
.layout3 .sidebar {
  flex: 2;
  height: 100%;
  border-radius: 5px 0 0 5px;
  background-color: #337ecc;
}
.layout3 .container {
  flex: 8;
  height: 100%;
  border-radius: 0 5px 5px 0;
  background-color: #a0cfff;
}
